public class Homework04 {
	public static void main(String[] args) {
		Circle c1 = new Circle();
		PassObject po = new PassObject();
		po.printArea(c1, 5);
	}
}

class Circle {
	double radius;
	public Circle() {

	}

	public Circle(double radius) {
		this.radius = radius;
	}

	public double findArea() {
		return Math.PI * radius * radius;
	}

	public void setRadius(double radius) {
		this.radius = radius;
	}
}

class PassObject{
	public void printArea(Circle c, int times) {
		System.out.println("Radius\tArea");
		for(int i = 1; i <= times; i++) {
			c.setRadius(i);
			System.out.println((double)(times) + "\t" + c.findArea());
		}
	}
}
